It’s a tale as old as tech time: a new flagship device appears on the scene, which means the device it’s replacing gets a price drop, and potentially offers better value for money for the discerning gadget buyer.
For this guide, we’re going to be looking specifically at the Oura Ring 4 (which launched in 2024) and the Oura Ring 5 (launched in 2026). The Oura Ring 4 is likely to see some great Amazon Prime Day deals, but should you go all in on the latest and most expensive model? Or is the older model the better investment when bought at a discount?
• Browse the full Amazon Prime Day sale
There’s no doubt that both models qualify as two of the best smart rings on the market right now, but which one is right for you depends on your budget and what your priorities are. Here’s how they compare.
Oura Ring 5 vs Oura Ring 4: pricing
While pricing varies as special offers come and go, the Oura Ring 5 launched for a starting price of $399 / £399 / AU$649, with some finishes costing extra at $499 / £499 / AU$799 – that’s a little more expensive than the original Oura Ring 4 (note that the prices for Australia are for third-party resellers, not from Oura directly).
There’s an upgraded charging case available for $99 / £99 / AU$159 for the Oura Ring 5, and then there’s the monthly subscription: $5.99 / £5.99 / AU$9.99 a month or $69.99 / £69.99 / AU$109.99 a year. While a subscription isn’t technically necessary to use an Oura Ring, you do need one to access the bulk of its features.
So what about Oura Ring 4 price drops? At the time of writing, the starting price is $349 / £349 if you go through the official channels, and we’re seeing some good deals on the Oura Ring 4 already, which you can find below. Given that it’s an older model, you’re much more likely to see discounts on this smart ring on both the Oura shop and third-party retailers like Amazon.
Oura Ring 5 vs Oura Ring 4: specs and features
What you need to know first is that the Oura Ring 5 is notably slimmer than the Oura Ring 4: for the most affordable finishes, it’s 6.09 mm (0.24 inches) wide and 2.28 mm (0.09 inches) thick, down from 7.9 mm (0.31 inches) and 2.8 mm (0.11 inches), which is a reduction of about 40%.
That can make a difference when it comes to comfort and day-to-day wear. The new model is lighter too, with those reduced dimensions, weighing 2 grams rather than 3.3 grams. Both models are available in a variety of ring sizes to fit your finger, though the Oura Ring 5 introduces a new sizing scheme that doesn’t match its predecessor.
The Oura Ring 5 is also more scratch resistant, while both models offer the same level of waterproofing (down to a depth of 100 meters). Battery life has been improved on the new model too, with the official estimates standing at 5-8 days for the Oura Ring 4, and 6-9 days for the Oura Ring 5.
As for sensors and health tracking features, this is where the rings are mostly tied. Oura says the fifth-generation model is more accurate because of a change in the sensor layout, but the core sensor tech is the same between the two models, and the software experience through the app is the same for tracking steps, activity, heart rate, and more.
Oura Ring 5 vs Oura Ring 4: Verdict
There’s clearly a lot that’s new and improved in the Oura Ring 5: it’s slimmer and lighter, and offers better battery life. Oura says it’s also more accurate, though that’s not something we’ve finished testing ourselves just yet. That said, the tracking capabilities, sensors, and app features are more or less identical between the models.
Where the Oura Ring 4 really has the potential to outdo the newer model is in terms of pricing. As time goes on, you’re likely to see bigger and bigger discounts on the fourth-generation model — and don’t forget that we awarded it our Health & Fitness Device of the Year award for 2025. It’s a seriously impressive bit of kit, and if the right discount comes along during Amazon Prime Day, it’ll certainly be a better-value package than the Ring 5.
Regardless, you’ll need to weigh up what’s most important to you for your next smart ring, and how much you’re prepared to spend to get it. Both of these premium smart rings from Oura will give you years of use — so we might be talking about the Oura Ring 6 before you need to think about upgrading again.
More Prime Day deals in the US
- Amazon Devices: Fire Sticks & Echo from $18
- Amazon Haul: viral gadgets, tech & appliances from $1.99
- Apple: MacBooks, AirPods & AirTags from $29
- Beauty: 50% off toothbrushes & hair tools
- Cheap TVs: smart TVs from $69.99
- Garden: tools, mowers, planters from $24.99
- Headphones: 50% off Beats, Bose & Samsung
- Laptops: Apple, HP & Dell from $199
- Mattresses: Sealy, Serta & more from $186
- Patio: outdoor furniture, rugs & decor from $19.99
- Sports: 50% off fitness gear, treadmills & clothing
- Vacuums: Dyson, Shark & Bissell from $34
More Prime Day deals in the UK
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